Home / 98,147.15-135,432.90-55,131.47

Finding the Fourth Proportional to 98,147.15, 135,432.90 and 55,131.47

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Solution

The fourth proportional to 98,147.15, 135,432.90 and 55,131.47 is: 76,075.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,147.15 : 135,432.90 = 55,131.47 : x
  2. Step 2: Convert to fraction form
    98,147.15/135,432.90 = 55,131.47/x
  3. Step 3: Cross multiply
    98,147.15x = 135,432.90 × 55,131.47
  4. Step 4: Simplify right side
    98,147.15x = 7,466,614,587.71
  5. Step 5: Solve for x
    x = 7,466,614,587.71/98,147.15
  6. Step 6: Final answer
    x = 76,075.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.